[SOLVED] Date function for week before

[dc_jt]

Im looking to get the date of a week before a certain date

 

For example

                $iLastDate = date("Y-m-d H:i:s ");

$timeStamp = strtotime($iLastDate);

$timeStamp += 24 * 60 * 60 * 7;

$NextBatchDate = date("Y-m-d  H:i:s", $timeStamp);

 

This is for a week ahead, how do I do a week before?

 

Thanks

[Orio]

Change += to -=

 

Orio.

[dc_jt]

Thanks a lot 

[jitesh]

  $iLastDate = date("Y-m-d H:i:s ");

      $timeStamp = strtotime($iLastDate);

      $timeStamp -= 24 * 60 * 60 * 7;

      $NextBatchDate = date("Y-m-d  H:i:s", $timeStamp);